Iwebhu: www.welding-honest.com Umnxeba:+0086 13252436578
Njengomthombo wamandla acocekileyo, amandla omoya akhule ngokukhawuleza kwiminyaka yakutshanje. Ngokuphuhliswa kwezixhobo zamandla omoya, iipleyiti zentsimbi ezisetyenzisiweyo ziya ziba ngqindilili kwaye ziba ngqindilili, kwaye ezinye ziye zadlula kwi-100mm, nto leyo ebeka phambili iimfuno eziphezulu zokuwelda. Okwangoku, i-Q355 okanye i-DH36 isetyenziswa ngokubanzi kwizixhobo zamandla omoya, kwaye iindlela zokuwelda zikhetha ngokubanzi i-flux cored wire gas protection welding (FCAW) kunye ne-arc welding ephantsi kwamanzi (SAW).
Kwinkqubo yokwenziwa kwe tower yeinjini yomoya, iintanda ezicolekileyo ziqhele ukwenzeka kumgca wokudityaniswa okanye kwindawo echaphazeleke bubushushu emva kokuwelda kwesakhelo socango, kwaye okukhona ipleyiti yentsimbi ijiyile, kokukhona ukuqhekeka okukhulu. Isizathu sibangelwa yi-superposition ebanzi yoxinzelelo, ubushushu be-welding, ukulandelelana kwe-welding, i-hydrogen aggregation, njl.
1, Ukukhethwa kwe-welding consumables
Ngenxa yokuba inxalenye ye-welding ibaluleke kakhulu, kuyafuneka ukuba ukhethe izinto ze-welding ezinomxholo ophantsi wokungcola, ukuqina okulungileyo kunye nokumelana nokuqhekeka okulungileyo, njenge-GFL-71Ni yethu (GB/T10045 T494T1-1 C1 A, AWS A5.20 E71T-1C) -J).
Ukusebenza okuqhelekileyo kweemveliso ze-GFL-71Ni:
● Umxholo wento yokungcola ephantsi kakhulu, i-P + S ≤0.012% (wt%) inokulawulwa.
● Iplastiki ye-elongation egqwesileyo, i-elongation emva kwekhefu≥27%.
● Ukuqina kwempembelelo egqwesileyo, -40 °C ifuthe lokufunxa amandla ≥ ngaphezulu kwe-100J.
● Ukusebenza kakuhle kwe-CTOD.
● Isiqulatho se-hydrogen esingu-H5 okanye ngaphantsi.
2. Ulawulo lwenkqubo yeWelding
(1) I-Welding preheating kunye nolawulo lwamaqondo obushushu phakathi kwejelo
Ngokubhekiselele kwimigangatho efanelekileyo kunye namava adlulileyo, kuyacetyiswa ukuba ukhethe ukushisa kwangaphambili kunye nobushushu obuphakathi kwetshaneli:
● 20 ~ 38mm ubukhulu, ubushushu obufudumeza bungaphezulu kwama-75 °C.
● 38 ~ 65mm ubukhulu, ubushushu obufudumeza bungaphezulu kwe-100 °C.
● Ngaphezulu kwe-65mm ubukhulu, ubushushu obufudumeza bungaphezulu kwe-125°C.
Ebusika, ukulahleka kobushushu kufuneka kuthathelwe ingqalelo, ngoko ke kufuneka kulungiswe nge-30 ~ 50 °C kwesi siseko.
(2) I-workpiece kufuneka iqhutywe ngokuqhubekayo ngexesha lenkqubo ye-welding ukugcina ubushushu obaneleyo be-inter-channel
● 20 ~ 38mm ubukhulu, kuyacetyiswa ukulawula ubushushu phakathi kwemijelo 130 ~ 160 °C.
● 38 ~ 65mm ubukhulu, kuyacetyiswa ukulawula ubushushu phakathi kwemijelo 150 ~ 180 °C.
● Ngaphezulu kwe-65mm ubukhulu, kuyacetyiswa ukulawula ubushushu phakathi kwamajelo 170 ~ 200 °C.
Isixhobo sokulinganisa iqondo lobushushu sesona silungileyo ukusebenzisa isixhobo sokulinganisa ubushushu boqhagamshelwano, okanye ipeni yokulinganisa ubushushu obukhethekileyo.
3, Ulawulo lwenkcazo yeWelding
| I-Welding wire Diameter | Iiparamitha ezicetyiswayo | Igalelo lobushushu |
| 1.2 mm | 220-280A/26-30V 300mm/min | 1.1-2.0KJ/mm |
| 1.4 mm | 230-300A/26-32V 300mm/min | 1.1-2.0KJ/mm |
Qaphela 1: Umbane omncinci kufuneka ukhethwe kwi-welding ephantsi, kunye nekhava yokuzalisa ingaba nkulu ngokufanelekileyo, kodwa akufanele idlule ixabiso elicetyiswayo.
Qaphela 2: Ububanzi be-weld bead enye akufanele budlule i-20mm, kwaye i-weld bead kufuneka icwangciswe ngokweyona meko. Xa i-groove ibanzi, kufuneka kusetyenziswe i-welding ye-multi-pass, enenzuzo yokucoca iinkozo.
4. Ukulawulwa kokulandelelana kwe-Welding
Kungcono ukusebenzisa i-multi-person symmetrical welding for annular welds, enokunciphisa kakhulu uxinzelelo lwe-shrinkage, kunye ne-4-person symmetrical welding ingcono kune-2-person symmetrical welding.
5, Ukususwa kweHydrojeni phakathi kwe-welding
Ukususwa kwehaidrojini kwicandelo eliphakathi ngumlinganiselo othatyathiweyo ngokuchasene nokuqokelelwa kwe-hydrogen enokusasazeka ekudibaneni kweepleyiti ezishinyeneyo. Uphando lubonisa ukuba umphumo ucacile kwiipleyiti ezityebileyo ezinkulu kune-70mm. Inkqubo yokusebenza imi ngolu hlobo lulandelayo:
● Yeka ukuwelda malunga ne-2/3 yeso lilonke.
● I-Dehydrogenation 250-300℃×2 ~ 3h.
● Qhubeka ukuwelda de kugqitywe ukususwa kwehydrogen.
● Emva kokuwelding, gquma ngomqhaphu wokugquma uze uphole kancinci ukuya kutsho kubushushu begumbi.
6. Eminye imiba efuna ingqalelo
● Ngaphambi kokuba zitshiswe, iibevels zifanele zicoceke yaye zicoceke.
● Izimbo zomzimba zifanele ziphetshwe kangangoko kunokwenzeka. Kucetyiswa ukuba usebenzise i-welding bead echanekileyo kunye ne-multi-layer multi-pass welding.
● Ubude bokwandiswa kocingo olusezantsi lwe-welding akufanele ludlule i-25mm. Ukuba i-groove inzulu kakhulu, nceda ukhethe umlomo we-conical.
● Emva kokuba i-carbon planer icociwe, umbala wesinyithi kufuneka upholiswe ngaphambi kokuba uqhubeke udibanisa.
Sinenani elikhulu lemizekelo yesicelo se-welding consumables esetyenziswa kushishino lwamandla omoya, wamkelekile ukuba ubuze!
Ixesha lokuposa: Nov-24-2022